Height: Not specified, but the average is 7 inches at the withers.

Weight: No more than 7 pounds and as little as 2 pounds.

Head: The top of the head should be flat rather than rounded. There is a definite drop from the head to the muzzle.

Ears: Dark, upright, and well set apart.

Feet: Compact and rounded. May be trimmed for show.

Tail: Docked to leave only a few inches. Tail may be held upright, straight back from the body, or anywhere in between.

Coat: Hair should be fine and silky, never wooly, and as straight as possible. Blue on the body is a dark steel-blue, not silver, and has no other color mixed with it. Tan is a rich, golden color, darker at the roots.

Topline: Back is level, but it should not be long.

Movement: Moves with a relatively straight front and good reach and drive.

Temperament: Busy and inquisitive by nature.